Step 12: Add comments
Now, Django comes with a rather fun way to work with comments, but I am going to simply cop out at this point. You can learn it if you like: Django's Comment Framework
I would recommend, rather, that you go with a third party app in this case. It is going to save you a lot of time, and will make creating feeds and social media gizmos so much easier, and give you time to actually write blog posts - or build another site with Django.
If you are considering third party apps, the main ones people in the Django community seem to use are IntenseDebate and Disqus.
I really couldn't say which is better. I am using IntenseDebate, and have enjoyed it so far.
They are really easy to use, and you can simply go to their website, and follow the instructions. The code, at least for IntenseDebate is linked to your url, which means you have little control over it, but they do provide access to it's objects and some nice CSS stuff. So far, all I have done is stick it in and let it do it's thing. If you want to do the same, the template you need to put it on is the 'detail.html' page. Simply slot the stuff they give you into the area below the 'post.body|safe' bit, and you are all set.
If you want some help with Django's actual comments, well, you are welcome to ask me. It isn't that hard to set up, but it is a little extra work.